Title page for etd-0709118-092547


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URN etd-0709118-092547
Author Po-Ying Yao
Author's Email Address ddd520guy74@gmail.com
Statistics This thesis had been viewed 5342 times. Download 232 times.
Department Electrical Engineering
Year 2017
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A Novel Dual Band Antenna for Wearable Repeaters
Date of Defense 2018-07-19
Page Count 60
Keyword
  • filter
  • RFID system
  • coplanar waveguide
  • wearable antenna
  • spiral antenna
  • high impedance surface
  • inverted F antenna
  • Abstract Many diseases need long-term monitoring blood concentration and glucose concentration to ensure human health. A new concept combines RFID system with repeater to monitor human health.
     A RFID tag is implanted in a human body to collect physiological data. A reader is placed at the indoor environment to read data from the tag. Implanted devices must obey the SAR standard to ensure human health. Human body is a lossy conductor and the body will reduce tag’s antenna efficiency and gain. When the physiological data transmits from human body to reader directly, it suffers limited distance between tag and reader. To enlarge the effective distance between tag and reader, a wearable repeater is added to collect physiological data and amplifies the physiological data.
     Antennas on the repeater operate in dual bands. The lower band radiator radiates toward the body to collect signal from the tag. The upper band radiator radiates toward the reader instead.   
     This thesis proposes a new design concept. This concept allows the control of the radiation patterns in the two bands separately. The ISM band peak gain of the antenna proposed in this thesis is higher than those in all reference and the antenna achieves low profile.
    keywords: high impedance surface, inverted F antenna, spiral antenna, filter, wearable antenna, coplanar waveguide, RFID system
    Advisory Committee
  • Chih-Wen Kuo - chair
  • Ming-Lung Kung - co-chair
  • Fu-Kang Wang - co-chair
  • Ken-Huang Lin - advisor
  • Files
  • etd-0709118-092547.pdf
  • indicate access worldwide
    Date of Submission 2018-08-09

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